In eukaryotes which of the following is removed from initially transcribed RNA before it is transported to the cytoplasm for translation ?

(1) Intron

(2) 3' Poly A tail

(3) Ribosome binding site

(4) 5' cap

The process of splicing in eukaryotes :

(1) is reminiscent of antiquity 

(2) represents dominance of RNA world

(3) is an indicator of the complexity of human genome

(4) is a legacy of organic evolution

The process of RNA splicing shows the dominance of :

(1) DNA world

(2) RNA world

(3) Protein world

(4) Microbial world

In RNA splicing :

(1) Exons are removed and introns are joined together

(2) Introns are removed and exons are joined together

(3) Cistrons are removed and introns are joined together

(4) Introns are removed and Cistrons are joined together

Consider the following statements:

I. Inheritance of a character is affected by promoter and regulatory sequences of a structural gene.
II. The split-gene arrangement represents an ancient feature of the genome.

III. The process of splicing represents the dominance of RNA world.

which of the above statements are true?

1. I and II only

2. I and III only

3. II and III only

4. I, II and III